package com.xigege.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.netflix.ribbon.proxy.annotation.Hystrix;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    /**
     * 正常访问 肯定OK的方法
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id){
        return "线程池：  " + Thread.currentThread().getName() + "  paymentInfo_OK  "+id + "/t" +"hhh" ;
    }

    /**
     * 超时会报错的方法
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_timeout(Integer id){
        int timeNumber = 2;
        try{
            //程序进来了停三秒钟
            TimeUnit.SECONDS.sleep(timeNumber);
        }catch (Exception e){
            e.printStackTrace();
        }
        return "线程池：  " + Thread.currentThread().getName() + "  paymentInfo_timeout  "+id + "/t" +"hhh  耗时秒" + timeNumber ;
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return Thread.currentThread().getName() + " o(╥﹏╥)o ";
    }

    //服务熔断实操------------------
    //=====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id)
    {
        if(id < 0)
        {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();  //UUID.randomUUID().toString()

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }

}
